Babysitter - Now Hiring

I'm looking for a great babysitter for my 4 children ages 1, 3, 5 and 7. I need help a few mornings and afternoons a week. Most likely you would not have all 4 at the same time but some combination of them throughout the day, probably mornings with the 1-year-old and afternoons out of the house with the older kids (picking them up from school and taking them to do something). Some light housekeeping would be helpful and structured activities with the kids would be ideal.